/* 初始化内外边距 */
*{
	margin:0;
	padding:0;
}
.box{
	width: 200px;
	height:230px;
	border: 1px solid black;
	font-size: 36px;
	text-align: center;
	/* float:right; *//* 右浮动 */
	float: left; /* 左浮动 */
}
.bufu{
	width: 300px;
	height: 300px;
	background-color:pink;
}
.fu{
	/* overflow: hidden; */
}
/* 3.添加after为元素 */
.cleafix::after{
	content:"";/* 内容为空 */
	display: block;
	height: 0;
	clear: both;
	visibility: hidden;
}
/* 4.添加双伪元素 */
.cleafix::after,.cleafix::after::before{
	content:"";
	display: table;
}
.cleafix::after{
	clear: both;
}